haskellleksah

Importing Haskell modules

I'm new to Haskell. How come when I try to use Days from Data.Time I get this error:

Could not find module `Data.Time':
      It is a member of the hidden package `time-1.1.4'.
      Perhaps you need to add `time' to the build-depends in your .cabal file.

I am importing Data.List and Control.Monad, and neither gives me this error message, but the code import Data.Time does.

What am I missing?

Thanks for the help!

EDIT: I'm getting a similar error message when I use: import Directory

Thanks guys, your answers got me on track!

Solution

  • Fire up Leksah with this project, open the package menu and select "edit package" from it. Now, choose "dependencies" and add the dependency you need (in your case time). You may also choose a version.

    PS: Don't forget to hit the "save" button afterwards. (I think this is a design failure...).